Derivative Positions (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Derivative Asset, Fair Value, Gross Asset	$ 5,577		$ 6,125
Derivative liability positions, fair value	5,225		5,673
Derivative Asset, Collateral, Obligation to Return Cash, Offset	(3,889)		(4,284)
Derivative Liability, Collateral, Right to Reclaim Cash, Offset	(3,889)		(4,284)
Derivative Asset, Fair Value of Collateral	(355)		(457)
Derivative Liability, Fair Value of Collateral	(972)		(864)
Derivative Assets	1,333	[1]	1,384	[1]
Derivative Liabilities	364	[2]	525	[2]
Derivative Financial Instruments, Assets
Derivative Asset, Notional Amount	110,883		120,818
Derivative Asset, Fair Value, Gross Asset	5,577		6,125
Derivative Assets	1,333		1,384
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Contract [Member] | Floating Rate Loans | Trading Account Assets [Member]
Derivative Asset, Notional Amount	16,900	[3]	17,250	[3]
Derivative Asset, Fair Value, Gross Asset	323	[3]	471	[3]
Derivative Financial Instruments, Assets | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Account Assets [Member]
Derivative Asset, Notional Amount	1,000	[4]	2,000	[4]
Derivative Asset, Fair Value, Gross Asset	35	[4]	52	[4]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member]
Derivative Asset, Notional Amount	92,983	[5]	101,568	[5]
Derivative Asset, Fair Value, Gross Asset	5,219	[5]	5,602	[5]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Account Assets [Member]
Derivative Asset, Notional Amount	0		0
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Mortgage Servicing Rights [Member] | Trading Account Assets [Member]
Derivative Asset, Notional Amount	10,032	[5]	1,425	[5]
Derivative Asset, Fair Value, Gross Asset	82	[5]	27	[5]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Loans | Trading Account Assets [Member]
Derivative Asset, Notional Amount	2,088	[5],[6]	4,561	[5],[7]
Derivative Asset, Fair Value, Gross Asset	13	[5],[6]	30	[5],[7]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Trading Activity | Trading Account Assets [Member]
Derivative Asset, Notional Amount	55,871	[5],[8]	70,615	[5],[9]
Derivative Asset, Fair Value, Gross Asset	2,407	[5],[8]	2,917	[5],[9]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Trading Activity | Trading Account Assets [Member]
Derivative Asset, Notional Amount	2,766	[5]	2,449	[5]
Derivative Asset, Fair Value, Gross Asset	56	[5]	61	[5]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Loans | Other Assets [Member]
Derivative Asset, Notional Amount	0		0
Derivative Asset, Fair Value, Gross Asset	0		0
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Trading Activity | Trading Account Assets [Member]
Derivative Asset, Notional Amount	1,408	[10],[5]	1,568	[11],[5]
Derivative Asset, Fair Value, Gross Asset	19	[10],[5]	37	[11],[5]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Trading Activity | Trading Account Assets [Member]
Derivative Asset, Notional Amount	18,113	[5],[8]	19,595	[5],[9]
Derivative Asset, Fair Value, Gross Asset	2,596	[5],[8]	2,504	[5],[9]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Other Contract | Loans | Trading Account Assets [Member]
Derivative Asset, Notional Amount	2,461	[12],[5]	1,114	[13],[5]
Derivative Asset, Fair Value, Gross Asset	29	[12],[5]	12	[13],[5]
Derivative Financial Instruments, Assets | Not Designated as Hedging Instrument [Member] | Other Contract | Trading Activity | Trading Account Assets [Member]
Derivative Asset, Notional Amount	244	[5]	241	[5]
Derivative Asset, Fair Value, Gross Asset	17	[5]	14	[5]
Derivative Financial Instruments, Liabilities [Member]
Derivative Liability, Notional Amount	106,608		104,799
Derivative liability positions, fair value	5,225		5,673
Derivative Liabilities	364		525
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Contract [Member] | Floating Rate Loans | Trading Liabilities [Member]
Derivative Liability, Notional Amount	2,000	[3]	0
Derivative liability positions, fair value	1	[3]	0
Derivative Financial Instruments, Liabilities [Member] | Designated as Hedging Instrument | Fair Value Hedging | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Liabilities [Member]
Derivative Liability, Notional Amount	300	[4]	900	[4]
Derivative liability positions, fair value	3	[4]	24	[4]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member]
Derivative Liability, Notional Amount	104,308	[5]	103,899	[5]
Derivative liability positions, fair value	5,221	[5]	5,649	[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Fixed Rate Debt | Trading Liabilities [Member]
Derivative Liability, Notional Amount	60	[5]	60	[5]
Derivative liability positions, fair value	6	[5]	7	[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Mortgage Servicing Rights [Member] | Trading Liabilities [Member]
Derivative Liability, Notional Amount	1,768	[5]	6,898	[5]
Derivative liability positions, fair value	36	[5]	79	[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Loans | Trading Liabilities [Member]
Derivative Liability, Notional Amount	5,351	[5],[6]	1,317	[5],[7]
Derivative liability positions, fair value	40	[5],[6]	5	[5],[7]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Interest Rate Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount	62,785	[5],[8]	65,299	[5],[9]
Derivative liability positions, fair value	2,211	[5],[8]	2,742	[5],[9]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Foreign Exchange Contract | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount	3,146	[5]	2,624	[5]
Derivative liability positions, fair value	53	[5]	57	[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Loans | Other Liabilities [Member]
Derivative Liability, Notional Amount	448	[5]	427	[5]
Derivative liability positions, fair value	4	[5]	5	[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Credit Risk Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount	1,422	[10],[5]	1,579	[11],[5]
Derivative liability positions, fair value	16	[10],[5]	34	[11],[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Equity Contract [Member] | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount	28,999	[5],[8]	24,712	[5],[9]
Derivative liability positions, fair value	2,831	[5],[8]	2,702	[5],[9]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Other Contract | Loans | Trading Liabilities [Member]
Derivative Liability, Notional Amount	85	[12],[5]	755	[13],[5]
Derivative liability positions, fair value	8	[12],[5]	4	[13],[5]
Derivative Financial Instruments, Liabilities [Member] | Not Designated as Hedging Instrument [Member] | Other Contract | Trading Activity | Trading Liabilities [Member]
Derivative Liability, Notional Amount	244	[5]	228	[5]
Derivative liability positions, fair value	$ 16	[5]	$ 14	[5]

[1] At June 30, 2014, $1.3 billion, net of $355 million offsetting cash collateral, is recognized in trading assets and derivatives within the Company's Consolidated Balance Sheets. At December 31, 2013, $1.4 billion, net of $457 million offsetting cash collateral, is recognized in trading assets and derivatives within the Company's Consolidated Balance Sheets.

[2] At June 30, 2014, $364 million, net of $972 million offsetting cash collateral, is recognized in trading liabilities and derivatives within the Company's Consolidated Balance Sheets. At December 31, 2013, $525 million, net of $864 million offsetting cash collateral, is recognized in trading liabilities and derivatives within the Company's Consolidated Balance Sheets.

[3] See “Cash Flow Hedges” in this Note for further discussion.

[4] See “Fair Value Hedges” in this Note for further discussion.

[5] See “Economic Hedging and Trading Activities” in this Note for further discussion.

[6] Amount includes $1.4 billion of notional amounts related to interest rate futures. These futures contracts settle in cash daily, one day in arrears. The derivative asset or liability associated with the one day lag is included in the fair value column of this table.

[7] Amount includes $885 million of notional amounts related to interest rate futures. These futures contracts settle in cash daily, one day in arrears. The derivative liability associated with the one day lag is included in the fair value column of this table.

[8] Amounts include $13.3 billion and $0.4 billion of notional related to interest rate futures and equity futures, respectively. These futures contracts settle in cash daily, one day in arrears. The derivative assets/liabilities associated with the one day lag are included in the fair value column of this table.

[9] Amounts include $15.2 billion and $0.2 billion of notional related to interest rate futures and equity futures, respectively. These futures contracts settle in cash daily, one day in arrears. The derivative asset associated with the one day lag is included in the fair value column of this table.

[10] Asset and liability amounts each include $4 million, respectively, of notional from purchased and written credit risk participation agreements, respectively, whose notional is calculated as the notional of the derivative participated adjusted by the relevant RWA conversion factor.

[11] Asset and liability amounts each include $4 million and $5 million of notional from purchased and written interest rate swap risk participation agreements, respectively, whose notional is calculated as the notional of the interest rate swap participated adjusted by the relevant RWA conversion factor.

[12] Includes a notional amount that is based on the number of Visa Class B shares, 3.2 million, the conversion ratio from Class B shares to Class A shares, and the Class A share price at the derivative inception date of May 28, 2009. This derivative was established upon the sale of Class B shares in the second quarter of 2009 as discussed in Note 13, “Guarantees.” The fair value of the derivative liability, which relates to a notional amount of $55 million, is immaterial and is recognized in trading assets and derivatives in the Consolidated Balance Sheets.

[13] Includes a notional amount that is based on the number of Visa Class B shares, 3.2 million, the conversion ratio from Class B shares to Class A shares, and the Class A share price at the derivative inception date of May 28, 2009. This derivative was established upon the sale of Class B shares in the second quarter of 2009 as discussed in Note 13, “Guarantees.” The fair value of the derivative liability, which relates to a notional amount of $55 million, is immaterial and is recognized in other liabilities in the Consolidated Balance Sheets.